The use of the higher derivatives of the magnetic potential to calculate the depth and other elements of occurrence from complex magnetic anomalies indicating the presence of a number of disconnected bodies with the same magnetization or rocks with changing magnetization provides a number of advantages over the methods of calculations directly from Z or ∆T curves: 1) the possibility of dissecting complex curves depicting the total field of a number of magnetized bodies; 2) a sharp reduction or complete elimination of the dependence of the problem solution on errors in the choice of the normal field; 3) the ability to calculate the total field of a number of magnetized bodies.

As it is known, the field strength ∆Т can be expressed through Za and Ha by the following approximate formula ...

The importance of simultaneous use of magnetic and gravity anomalies in the study of geologic structure is well known. In the study of regional geology is usually used data from aeromagnetic surveys and maps (or curves on the profiles) of ∆Т and ∆g are compared. Comparison of these data is complicated by two circumstances: 1) the shape of the ∆Т curves is strongly influenced by oblique magnetization to such an extent that under known conditions the ∆Т curves are more similar to the second derivatives of the gravitational potential Uxzv. than to Uzz; 2) the analytical expression of ∆Т is a derivative of the gravitational potential one order of magnitude higher than ∆g. The above difficulties can be eliminated. Let us consider the first question.